Furnace-dust collector.



U WEDGE FURNACE DUST COLLECTOR. 'APPLICATION FIILED 1mm, I913.

.4... (I ll u. WEDGE. FURNACE DUST COLLECTOR; APPLICATION FILED MN. 29,I913- L1 351 Patented Dec. 21, 1915.

3 SHEETS-SHEET 2.

U. WEDGE. FURNACE DUST COLLECTOR. APPLICAT!ON FILED JAN. 29. 1913.

Patented Dec. 21, 1915.

3 SHEETSSHEET 3.

l W AV Wfixiess's U'L'LEY WEDGE, OF ARDMORE, PENNSYLVANIA.

FURNACE-DUST COLLECTOR.

Specification of Letters Patent. te t 21 1 Application filed January 29,1913. Serial 'No. 744,967.

To all whom it may concern:

Be it known that I, UTLEY WEDGE, a citi-v zen of the United States,residing in Ardmore, Pennsylvania, have invented certain Improvements inFurnace-Dust. Collectors, of which the following is a specifidation.

My invention relates to apparatus employed for separating from furnacegases, and the like, particles held in mechanical suspension therein,and commonly known as dust or flue dust.

My invention relates especially to a dust collector of that type inwhich the gases are caused to pass between closely disposed plates uponwhich the dust is deposited during such passage, the object of myinvention being to provide simple and efficient means for effecting thedischarge of the dust from the plates at. any desired intervals, andalso to provide for the con venient removal from the apparatus of thedust so discharged from the plates.

In the accompanying drawingsFigure 1 is a transverse section of myimproved 'dust.collecting apparatus, the section being taken on the lineaa, Fig. 2; Fig. 2 is a horizontal section on the line b?;, Fig. 1; Fig.3 is a longitudinal section on the line 0 -0, Fig. 2, of the casing ofthe apparatus without the dust collecting plates or the supportingdevices therefor; Fig. 4 is a transverse section, on a larger scale thanF ig. 1, and illustrating more clearly than in said figure thesupporting devices for the dust 'collectingplates, and Fig. 5 is ahorizontal section on a larger scale than Fig. 2, and illustrating moreclearly than in said figure the means employed for subdividing thespaces between adjoining groups of dust collecting plates.

The structure has outer walls 1 which inclose a chamber of any desiredshape and dimensions and intended for the reception of a series of.groups of dust collecting plates each group comprising two series ofsuperposed plates, the plates 2 of one series being inclined in onedirection at any desired angle to the horizontal, and the plates 3 ofthe-other series being inclined at a corresponding angle in the oppositedirection. Alleyways 4 intervene between the groups of plates and alsobetween the plates of the outermost groups and the outer wall of thefurnace, these alleyways being 'preferabl'y partitioned as hereinafterset forth. The roof of the structure comprises a series of sections, onefor each group of collecting plates, the side wall 5 of each of theseroof sections being preferably pitched to accord with the pitch or angleof the series of plates which it covers. Below each group of collectingplates, and extending throughout the length of the structure, is achamber 6 comprising side walls 7 and a roof 8 pitched to accord withthe angle of the plates of the group above the same, said side Wallshaving therein passages 9 communicating with the adjacent alleyways 4:.

The plates 2 and 3 of each group are mounted in any suitable way betweencentral suspension rods 10 and side suspension rods 11, the meansemployed in the present instance for effecting such mounting beingtapering collars 12 on the-central rods, and lugs or hooks 13 projectingfrom sleeves 14 strung. upon the side rods and retained in positionvertically thereon by any suitable means. (See' Fig. 4.)

The upper ends of the suspension rods 10 and 11 are mounted uponsuitable supports above the -roof of the furnace, such supports in thepresent instance consisting of pairs of I-beams 15 disposed back to backand mounted at their ends upon girders 16 carried by vertical columns 16as shown in Fig. 3, each suspension rod passing freely between the pairof beams and having at its upper end a flange, collar, or like device,resting upon the upper flanges of the beams, as shown in F ig; 1.

Each of the suspension rods passes through an opening 17 in the roof ofthe furnace, this opening being of such dimensions as to permit of aslight side play of the rod therein and being luted or packed so as toprevent the escape of gas therethrough without interfering with suchmovement. of the rod therein. The alleyways 4' are subdivided by plates18 which are secured to andsupported by ears 19 projecting from certainof the plate supporting collars 14 on the suspension rods 11, as bestshown in Figs. 1 and 5.

Extending from one of the outer-walls of the structure is a flue 20communicating with the upper portion of the furnace 21 or otherstructure which supplies the gas from which the dust is to be separated.the opposite wall of the separator structure having a discharge outlet22 which can communicate through a suitable discharge pipe or flue withany point at which the cleaned gas is to be discharged-or utilized. Thefiue 20 preferably flares in both directions so as to distribute-the gasover as wide as possible an area on entering the chamber containing thedust collecting plates, and the discharge passage 22 is in line with theflaring inner end of the gas supplying flue 20.

The plates 2 and-3 present their ends to the current of gas entering thedust collecting chamber of the apparatus and the groups of platespresent a multiplicity of passages through which the gas is caused topass in its flow through said chamber, any flow through the alleyways 4being prevented by reason of the stop plates 18 in said alleyways.

The gas passes through the channels be tween the plates 2 and 3 atrelatively low speed so as to afiiord an opportunity for the deposit ofthe dust upon said plates, and in order to break up the direct flow ofthe gas through said channels the plates 2 and 3 are, by preference,corrugated longitudinally, as shown in Fig. 2, so as to cause the gascur rents to follow a wavy or zigzag course and thus tend to throw thedust toward the corrugated faces of the plates, the dust finallysettling upon the upper face of the plate at the bottom of the channel.Another function of the corrugations is to impart stiffness to theplates 2 and 3 so as to prevent them from sagging and insure themovement of each plate substantially as a unit.

One of the principal difficulties encountered in the operation of dustcollectors of the character to which my invention relates has been theremoval of the accumulated dust from the faces of the plates. for, evenalthough the saidplates may be disposed at an angle greater than thenormal angle of repose of powdered granular material, the

' tendency of the fine particles of dust to cling together and to thesurface of the plate prevents the automatic discharge of the dust fromthe plate which would normally result if it was a free flowing body. Ihave found, however, that if the plates are subjected to a shaking orjarring action, causing them to tremble, the hold of the deposited dustupon the plates will be loosened and the mass of dust will slide fromeach plate into the adjoining alleyway In order to impart the desiredshaking or jarring motion to the separator plates. I find it sullicientto jar the supporting rods upon which the plates are suspended. a blowor succession of blows delivered upon the portions of the rods 10 and 11projecting above the roof of the apparatus bring suflicient to impartsucha tremor to the plates 2 and 3 as to cause dislodgment of thematerial which has accumulated thereon.

The material accumulating in the alleyways a can be withdrawn therefrominto the chambers 6 through the openings 9 in the side Walls of saidchambers, the dimensions of the chambers 6 being such as to accommodatethe workmen who perform this duty. To prevent said chambers frombecoming uncomfortably hot the roofs 8 may be provided with a lining 25of asbestos or other material which is anon-conductor or poor conductorof heat, and to prevent radiation of heat from the roofs 5 of theapparatus the spaces between said roofs or between the same andthe outerwalls may be filled with any material which will thus restrict orprevent heat radiation.

Although I- prefer in practice to use, in each group of dust collectingplates, two series of plates, one inclined in one direction and theother in an opposite direction, each group of plates'may consist of buta single series, if desired, and while -I prefer also to mount the dustcollecting plates upon supporting rods suspended from above, said platesmay be otherwise supported, if desired, for example upon posts somounted that they will not be held rigidly and thus prevented from beingjarred or agitated by blows upon them to such an extent as to transmitsuch agitation to the plates. supported upon them. The jarring of one ofthe supports or one row of supports for the series of plates may, inmany cases, be sufficient to impart the desired shake or tremor to saidplates.

I claim:

1. The combination, in a dust collector, of a casing containing achamber having therein superposed, transversely inclined dustretainingplates, means for passing dustladen gases between said plates, rods atthe top and at the bottom of said plates upon which they are mounted,and means for suspending said rods at the top so that they can be jarredand causedto transmit to the plates vibrations for causing discharge ofthe accumulated dust therefrom.

Q. The combination, in a dust collector, of a casing havingthercin achamber containing superposed, transversely inclineddustretaining'plates, means for passing dustladen gases between saidplates, rods at the top and other rods at the bottom of said plates uponwhich they are mounted, said bottom supporting rods being free at theirlower ends, and means for suspending said rods at the top so that theycan be jarred in order to transmit to the plates vibrations for causingdischarge of the accumulated dust therefrom.

A dust separator comprising a casing having a chamber therein containingsuperposed, transversely inclined dust-retaining plates, means forpassing dust-laden gases between said plates, and a supporting rod forsaid plates having thereon flaring collars against which the upper endsof the plates have a hearing.

a A dust separator comprising a casing having a chamber thereincontaining superposed, transversely inclined dust-retaining plates,means for passing the dust-laden gases between said plates, andsupporting rods at the lower ends of the plates, said rods havingsleeves strung thereon, and said sleeves having plate-supporting hookspro- 10 jecting therefrom. I

In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing Witnesses.

UTLEY WEDGE. Witnesses:

KATE A. BEADLE,

HAMIL'rQN D. TURNER.

